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  3. January 2017

Re: ILERPG call to Java get list fails and generates core dump

I have now generated all the prototypes using the Rdi wizard.

We have corrected the creation of the java calendar object and now can
convert the java object to a string and check the calendar values which
are now correct.

Two steps forward and then one step backwards.

We are now calling a class that returns a generic java object. The call
completes without error but the java object returned has a value of 0 and
any attempt to use that object fails.

Can a class that returns a generic object be used in RPG ?

I am also struggling to get any debug information from the java calls.
(Will open a pmr with IBM if I can't find any other way to get any
logging)

I have done the following but there is noting in the stdout or errout
files.

ADDENVVAR QIBM_RPG_JAVA_PROPERTIES

VALUE('-Dos400.stdout=file:/home/sttapp100r.txt;-Dos400.stderr=file:/home/sttapp100r.err.txt;')

ADDENVVAR QIBM_USE_DESCRIPTOR_STDIO VALUE('Y')

call CHECKSTDIO (This is the IBM documented program to open the output
files)
See:
http://www.ibm.com/developerworks/rational/cafe/docBodyAttachments/2681-102-2-7220/Troubleshooting_RPG_Calls_To_Java_v2.html#stdout

Cheers

Don








From: Jon Paris <jon.paris@xxxxxxxxxxxxxx>
To: Java400 <java400-l@xxxxxxxxxxxx>
Date: 10/01/2017 01:21 AM
Subject: Re: ILERPG call to Java get list fails and generates core
dump
Sent by: "JAVA400-L" <java400-l-bounces@xxxxxxxxxxxx>



Glad it helped Dan - I'm afraid I don't have time to dig deeper right now.

You didn't answer the question as to how you derived the prototypes. Did
you use the RDi wizard? If not, I would suggest trying that and comparing
the results with what you have - it has to be something relatively
trivial.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Jan 8, 2017, at 6:18 PM, Don Brown <DBrown@xxxxxxxxxx> wrote:

Thanks Jon.

I think you may have identified where this is failing.

The code that is attempting to retrieve the results of the search is not

returning anything although it does not generate an error.

resultJ = search(transGatewayJ: transReqJ);

I believe my problem is working out how to call what seems to be a
complex
method.

If we look at the signature for that method we have;

public com.braintreegateway.DateRangeNode authorizedAt();
Signature: ()Lcom/braintreegateway/DateRangeNode;

The prototypes for this are;

D transReqC PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D TransactionSearchRequest':
D *CONSTRUCTOR)

D dateParams PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D TransactionSearchRequest':
D 'authorizedAt')
D
Class(*JAVA:'com.braintreegateway.-
D DateRangeNode')

D setRange PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D DateRangeNode':
D 'between')
D
Class(*JAVA:'com.braintreegateway.-
D SearchRequest')
D start O
Class(*JAVA:'java.util.Calendar')
D end O
Class(*JAVA:'java.util.Calendar')

D transGateway PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D BraintreeGateway':
D 'transaction')
D
Class(*JAVA:'com.braintreegateway.-
D TransactionGateway')


D transreqJ S O
Class(*JAVA:'com.braintreegateway.-
D TransactionSearchRequest')

D dateparamsJ S O
Class(*JAVA:'com.braintreegateway.-
D DateRangeNode')

D transgatewayJ S O Class(*JAVA:
D 'com.braintreegateway.-
D TransactionGateway')

transReqJ = transReqC();
dateParamsJ = dateParams(transReqJ);
transreqJ = setRange(dateParamsJ: startJ: endJ);
transGatewayJ = transGateway(gateway);

// Retrieve the transactions

resultJ = search(transGatewayJ: transReqJ);

The java line of code that does this is;

TransactionSearchRequest request = new
TransactionSearchRequest().authorizedAt().between(start, end);

Here is the full java test program that does retrieve a transaction ...

package test;

import java.util.Calendar;
import java.util.List;

import com.braintreegateway.BraintreeGateway;
import com.braintreegateway.Environment;
import com.braintreegateway.ResourceCollection;
import com.braintreegateway.Transaction;
import com.braintreegateway.TransactionGateway;
import com.braintreegateway.TransactionSearchRequest;
import com.braintreegateway.exceptions.AuthenticationException;

public class BraintreeClient {

public BraintreeClient() {
// System.out.println("Obtain client token from Braintree

...");
// String clientToken = gateway.clientToken().generate();
// System.out.println("Client Token received:
"+clientToken);
try {
BraintreeGateway gateway = new
BraintreeGateway(Environment.SANDBOX, "hvcftg4259dkhjx8",
"pf5dy7b252n3hxhz",
"55e295ac1d16137f6ae6a2b267be3de3");
System.out.println(gateway.getConfiguration().getMerchantPath());
Calendar start = Calendar.getInstance();
start.set(Calendar.DATE, 3);
start.set(Calendar.MONTH, 0);
start.set(Calendar.YEAR, 2017);
start.set(Calendar.HOUR, 0);
start.set(Calendar.MINUTE, 0);
start.set(Calendar.SECOND, 0);
start.set(Calendar.MILLISECOND, 0);
System.out.println("start = " + start.getTime());
Calendar end = Calendar.getInstance();
end.set(Calendar.DATE, 5);
end.set(Calendar.HOUR, 23);
System.out.println("end = " + end.getTime());
TransactionSearchRequest request = new
TransactionSearchRequest().authorizedAt().between(start, end);
ResourceCollection<Transaction> collection =
gateway.transaction().search(request);
TransactionGateway tg = gateway.transaction();
// getFirst
Transaction t = collection.getFirst();
System.out.println("First Transaction: id =
"+t.getId()+", amount = "+t.getAmount());
} catch (AuthenticationException e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
new BraintreeClient();
}

}

When run the following is the output ...

/merchants/hvcftg4259dkhjx8
start = Tue Jan 03 00:00:00 EST 2017
end = Thu Jan 05 23:08:59 EST 2017
Jan 09, 2017 7:09:00 AM com.braintreegateway.util.Http httpRequest
INFO: [Braintree] [9/Jan/2017 07:09:00 +1000]] POST
/merchants/hvcftg4259dkhjx8/transactions/advanced_search_ids
Jan 09, 2017 7:09:01 AM com.braintreegateway.util.Http httpRequest
INFO: [Braintree] [9/Jan/2017 07:09:01 +1000]] POST
/merchants/hvcftg4259dkhjx8/transactions/advanced_search
First Transaction: id = 787kawhf, amount = 200.00


The full source code is below ...

H DftActGrp(*no) Thread(*serialize) DATEDIT(*YMD)

D/SPACE 3
D****************************************************************
D* PROGRAM-STATUS DATA STRUCTURE
D* SDSPGM - PROGRAM NAME
D* SDSPSD - PROGRAM STATUS CODE WHEN ERROR OCCURRED
D* SDSRTN - RPG ROUTINE WHERE ERROR OCCURRED
D* SDSWS - WORKSTATION ID
D* SDSUSR - USER PROFILE
D****************************************************************
D SDS SDS 429
D SDSPGM *PROC
D SDSPSD *STATUS
D SDSRTN *ROUTINE
D SDSPRM *PARMS
D SDSWS 244 253
D SDSUSR 254 263

D****************************************************************
D* Definition of Gateway Java Class
D****************************************************************
D gatewayC PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D BraintreeGateway':
D *CONSTRUCTOR)
D env O CLASS(*JAVA:'java.lang.String')
CONST
D merId O CLASS(*JAVA:'java.lang.String')
CONST
D privKey O CLASS(*JAVA:'java.lang.String')
CONST
D pubKey O CLASS(*JAVA:'java.lang.String')
CONST
D*
D getConfig PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D BraintreeGateway':
D 'getConfiguration')
D
Class(*JAVA:'com.braintreegateway.-
D Configuration')
D*
D calendarC PR O ExtProc(*JAVA:
D
'java.util.Calendar':'getInstance')
D
Class(*JAVA:'java.util.Calendar')
D STATIC
D*
D setVal PR ExtProc(*JAVA:
D 'java.util.Calendar':
D 'set')
D field 10I 0 VALUE
D value 10I 0 VALUE
D*
D transReqC PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D TransactionSearchRequest':
D *CONSTRUCTOR)
D*
D getPath PR O ExtProc(*JAVA:
D
'com.braintreegateway.Configuration':
D 'getMerchantPath')
D Class(*JAVA:'java.lang.String')
D*
D dateParams PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D TransactionSearchRequest':
D 'authorizedAt')
D
Class(*JAVA:'com.braintreegateway.-
D DateRangeNode')
D*
D setRange PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D DateRangeNode':
D 'between')
D
Class(*JAVA:'com.braintreegateway.-
D SearchRequest')
D start O
Class(*JAVA:'java.util.Calendar')
D end O
Class(*JAVA:'java.util.Calendar')
D*
D transGateway PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D BraintreeGateway':
D 'transaction')
D
Class(*JAVA:'com.braintreegateway.-
D TransactionGateway')
D*
D search PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D TransactionGateway':
D 'search')
D
Class(*JAVA:'com.braintreegateway.-
D ResourceCollection')
D O
Class(*JAVA:'com.braintreegateway.-
D TransactionSearchRequest')
D*
D makestring PR O EXTPROC(*JAVA:
D 'java.lang.String':
D *CONSTRUCTOR)
D bytes 30A CONST VARYING
D*
D getId PR O ExtProc(*JAVA:
D
'com.braintreegateway.Transaction':
D 'getId')
D Class(*JAVA:'java.lang.String')
D*
D getAmount PR O ExtProc(*JAVA:
D
'com.braintreegateway.Transaction':
D 'getAmount')
D Class(*JAVA:'java.lang.String')
D*
D getFirst PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D ResourceCollection':'getFirst')
D Class(*JAVA:'java.lang.Object')
D*
D getIds PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D ResourceCollection':'getIds')
D*** Class(*java:'com.braintreegateway.-
D*** ResourceCollection')
D Class(*JAVA:'java.util.List')
D*
D get pr o class(*java :
'java.lang.Object')
D extproc(*java
D : 'java.util.List'
D : 'get')
D index 10i 0 value
D*
D newString pr o extproc(*java
D : 'java.lang.String'
D : *constructor)
D value 25a const varying
D*
D stringC PR O ExtProc(*JAVA:
D 'java.lang.String':
D *CONSTRUCTOR)
D 120A Const Varying
D*
D getBytes PR 40A ExtProc(*JAVA:
D 'java.lang.String':
D 'getBytes') Varying
*
D getBytesLong PR 120A ExtProc(*JAVA:
D 'java.lang.String':
D 'getBytes') Varying
*
D gateway S O Class(*JAVA:
D 'com.braintreegateway.-
D BraintreeGateway')
*
D transgatewayJ S O Class(*JAVA:
D 'com.braintreegateway.-
D TransactionGateway')
*
* display message without reply
*
D debugMessage PR
D PRMDBG 1 CONST
D PRMMSG 51 CONST
*
* display message with reply
*
D debugMessage2 PR 2
D PRMDBG 1 CONST
D PRMMSG 50 CONST
D PRMRTN S 2
*
D envJ S O Class(*JAVA:'java.lang.String')
D env S 40A
D meridJ S O Class(*JAVA:'java.lang.String')
D merid S 40A
D privKeyJ S O Class(*JAVA:'java.lang.String')
D privKey S 40A
D pubKeyJ S O Class(*JAVA:'java.lang.String')
D pubKey S 40A
D configJ S O
Class(*JAVA:'com.braintreegateway.-
D Configuration')
D config S 40A
D pathJ S O Class(*JAVA:'java.lang.String')
D path S 40A
D dateparamsJ S O
Class(*JAVA:'com.braintreegateway.-
D DateRangeNode')
D dateparamsX S 40A
D startJ S O
Class(*JAVA:'java.util.Calendar')
D start S 40A
D endJ S O
Class(*JAVA:'java.util.Calendar')
D end S 40A
D transreqJ S O
Class(*JAVA:'com.braintreegateway.-
D TransactionSearchRequest')
D transactionJ S O Class(*JAVA:'java.lang.Object')
D resultJ S O
Class(*JAVA:'com.braintreegateway.-
D ResourceCollection')
D transJ S O
Class(*JAVA:'com.braintreegateway.-
D Transaction')


/free

exsr test01;

*inlr = *on;

begsr test01;

//***************************//
// Authentication credential //
//***************************//
envJ = makestring('sandbox');
merIdJ = makestring('hvcftg4259dkhjx8');
privKeyJ = makestring('pf5dy7b252n3hxhz');
pubKeyJ = makestring('55e295ac1d16137f6ae6a2b267be3de3');

//***************************//
// Setup sdtart and End dates//
//***************************//
startJ = calendarC();
setVal(startJ: 5: 1); // day
setVal(startJ: 2: 0); // month
setVal(startJ: 1: 2017); // year
setVal(StartJ: 10: 0); // hour
setVal(startJ: 12: 0); // minute
setVal(startJ: 13: 0); // second
setVal(startJ: 14: 0); // millisecon

endJ = calendarC();
setVal(endJ: 5: 5); // day
setVal(endJ: 2: 0); // month
setVal(endJ: 1: 2017); // year
setVal(endJ: 10: 0); // hour
setVal(endJ: 12: 0); // minute
setVal(endJ: 13: 0); // second
setVal(endJ: 14: 0); // millisecond

//**************************//
// Connect to Gateway //
//**************************//
gateway = gatewayC(envJ: merIdJ: privKeyJ: pubKeyJ);

// Checking if we got a conection by retrieving the path
configJ = getConfig(gateway);
config = getBytes(configJ);
pathJ = getPath(configJ);
path = getBytes(pathJ);

// Create search request

transReqJ = transReqC();
dateParamsJ = dateParams(transReqJ);
transreqJ = setRange(dateParamsJ: startJ: endJ);
transGatewayJ = transGateway(gateway);

// Retrieve the transactions

monitor;
resultJ = search(transGatewayJ: transReqJ);
on-error;
endmon;

transJ = getFirst(resultJ);

endsr;
/end-free
C/SPACE 3

D****************************************************************
D* Define procedure - debug message
D****************************************************************
P debugMessage B
D debugMessage PI
D PRMDBG 1 CONST
D PRMMSG 51 CONST

C PRMDBG IFEQ 'Y'
C PRMMSG DSPLY
C ENDIF

P DebugMessage E

D****************************************************************
D* Define procedure - debug message with reply
D****************************************************************
P debugMessage2 B
D debugMessage2 PI 2
D PRMDBG 1 CONST
D PRMMSG 50 CONST
D PRMRTN S 2

C PRMDBG IFEQ 'Y'
C PRMMSG DSPLY PRMRTN
C ENDIF
C
C RETURN PRMRTN

P DebugMessage2 E


Don Brown





From: Jon Paris <jon.paris@xxxxxxxxxxxxxx>
To: Java400 <java400-l@xxxxxxxxxxxx>
Date: 09/01/2017 04:09 AM
Subject: Re: ILERPG call to Java get list fails and generates
core
dump
Sent by: "JAVA400-L" <java400-l-bounces@xxxxxxxxxxxx>



Without the whole thing I'm afraid I can't help much ... too many
unknowns
here. The fact that earlier method calls didn't blow up doesn't mean
they
worked! So all of the protos etc. need checking.

How did you create the prototypes? Using the RDi tooling?

One thing I did notice was that in the error messages you posted, many
of
the names are prefixed by a capital L. Is that a typo? or did they
really
paper that way in the log? for example shouldn't Ljava.util.List be
java.util.List ?


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Jan 7, 2017, at 10:47 PM, Don Brown <DBrown@xxxxxxxxxx> wrote:

The definition of result is;

D result S O Class(*JAVA:'com.braintreegateway.-
D ResourceCollection')

I thought the problem may have been java version related but I have now

tried it on 1.7 64 bit and exactly the same error.




Don Brown

MSD Information Technology

Suite 5/29 McDougall Street Milton Q 4064
( 07 3368 7888
+ PO Box 1629 MILTON Q 4054
Ê 07 3368 7877
* Don.Brown@xxxxxxxxxx
È 0408 751 644
þ www.msd.net.au www.architect4web.com.au





I am a proud supporter of THE REFERRAL NETWORK and recommend the
services
of the other member businesses. For more information please checkout
the

website www.refnet.net.au





From: Jon Paris <jon.paris@xxxxxxxxxxxxxx>
To: Java400 <java400-l@xxxxxxxxxxxx>
Date: 07/01/2017 12:52 AM
Subject: Re: ILERPG call to Java get list fails and generates
core
dump
Sent by: "JAVA400-L" <java400-l-bounces@xxxxxxxxxxxx>



What is the definition of the object result?


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Jan 5, 2017, at 11:56 PM, Don Brown <DBrown@xxxxxxxxxx> wrote:

I posted this on the Midrange-L list and it was suggested I post it
here.


I am hoping someone can point me in the right direction with this one.

Java is crashing when I use a method that should return a java list
object..

I checked the class using the javap -s command in qsh I get the
details

about the class; (All class details from this are included below)

The method I am using is gstIds
public java.util.List getIds();
Signature: ()Ljava/util/List;

I have the prototype defined in my program as follows;

D getIds PR O ExtProc(*JAVA:
D 'com.braintreegateway.-
D ResourceCollection':'getIds')
D Class(*JAVA:'java.util.List')

D listIdJ S O Class(*JAVA:'java.util.List')

The following code snippet precedes the error but running in debug all

statements complete normally

// Create search request
transReqJ = transReqC();
dateParamsJ = dateParams(transReqJ);
transreqJ = setRange(dateParamsJ: startJ: endJ);
transGatewayJ = transGateway(gateway);

// Retrieve the transactions
result = search(transGatewayJ: transReqJ);

When the following line is executed it results in a gpf and system
dump.

There is a stack trace showing on the screen but is meaningless to me
-

See below.

listIdJ = getIds(result);

The joblog shows error MSG:RNX0301 Java exception received when
calling

Java method.
Cause . . . . . : RPG procedure STTAPP100R in program
XAPSW/STTAPP100R

received Java exception "**UNKNOWN ERROR**" when calling method
"getIds"


with signature "()Ljava.util.List;" in class
"com.braintreegateway.ResourceCollection".


Results from javap -s

javap -s com.braintreegateway.ResourceCollection

The java.version property was detected as input. This property is used

as
output only and has no effect on JVM initialization.
Compiled from "ResourceCollection.java"
public class com.braintreegateway.ResourceCollection extends
java.lang.Object implements java.lang.Iterable{
public
com.braintreegateway.ResourceCollection(com.braintreegateway.Pager,

com.braintreegateway.util.NodeWrapper);
Signature:
(Lcom/braintreegateway/Pager;Lcom/braintreegateway/util/NodeWrapper;)V


public int getMaximumSize();
Signature: ()I
public java.util.Iterator iterator();
Signature: ()Ljava/util/Iterator;
public java.lang.Object getFirst();
Signature: ()Ljava/lang/Object;
public java.util.List getIds();
Signature: ()Ljava/util/List;
static java.util.List
access$000(com.braintreegateway.ResourceCollection);


Signature: (Lcom/braintreegateway/ResourceCollection;)Ljava/util/List;



Stack Trace from screen when error occurs

----------- Stack Backtrace -----------
gpProtectedRunCallInMethod+0x24 (0xD07F3BC0 [libj9vm24.so+0x15bc0])
signalProtectAndRunGlue+0x14 (0xD080F090 [libj9vm24.so+0x31090])
j9sig_protect+0x138 (0xD0872F54 [libj9prt24.so+0x1f54])
gpProtectAndRun+0xc4 (0xD080F19C [libj9vm24.so+0x3119c])
gpCheckCallin+0x44 (0xD07F4398 [libj9vm24.so+0x16398])
callVirtualObjectMethodA+0x38 (0xD07F8538 [libj9vm24.so+0x1a538])
J9_i5OS_CallObjectMethodA+0xac (0xD054C8B0 [libi5osenv.so+0xd8b0])
(0x000036F0)



Don Brown

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